Below is the pin-out diagram and layout of the PeekyPokey board rev. 2.2. Please see explanatory text below the diagram.

PeekyPokey rev.2.2 pin-out

Pin assignments explained

Pin#

Name

Description

 

Pin#

Name

Description

1

gp7

GPIO

24

GND

Ground

2

gp6

GPIO

23

VDD

5V or 3.3V (switch)

3

gp5

GPIO

22

3V3

Fixed 3.3V

4

gp4

GPIO

21

TX

Serial: Transmit

5

gp3

GPIO

20

RX

Serial: Receive

6

gp2

GPIO

19

/CTS

Serial: Clear to send, active low

7

gp1

GPIO

18

/RTS

Serial: Request to send, active low

8

gp0

GPIO

17

+5V

Fixed 5V

9

/RST

Reset, active low

16

D-

USB: Data-

10

+5V

Fixed 5V

15

D+

USB: Data+

11

3V3

Fixed 3.3V

14

GND

Ground

12

VDD

5V or 3.3V (switch)

13

3V3

Fixed 3.3V

 

Power switch
The switch is used to select Vdd of either 5V (left position) or 3.3V (right position) as shown above. Be careful when connected to external hardware not to feed 5V to parts that operate at 3.3V as this could damage such parts. Please note that when the switch is in the middle position, only Vdd is switched off while the fixed 3.3V and 5V pins are still active.

LED jumper
The jumper is used to enable or disable all LEDs. When the jumper is IN all LEDs are enabled and when jumper is OUT all LEDs are disabled (unconditionally off). Note that the jumper includes the green power LED and not just the indicator LEDs.

Bottom pin label sticker (not shown)
There is a white sticker located on the bottom side of the board with pin labels. Since the sticker is on the bottom side, it is mirrored in relation to the image shown above. This is to reflect the pin locations as seen when actually looking at the bottom side. Please keep this in mind when flipping the board to look up pin mappings.

About the USB receptacle
Be careful when inserting (or ejecting) a mini B plug into the board receptacle and make sure you are not bending the plug and board apart from each other since it could loosen the receptacle and damage the board. Always insert or eject the plug in a straight angle and avoid applying excessive force.

Last edited Jan 18, 2014 at 2:37 AM by hanzibal, version 12